Yes, two spots SQ is better for the injections. I so glad she’s chewing her cud, that’s a step forward.
Personally, I like cydectin but use the kind for sheep. Maybe you can post your feeding routine to your healthy goats and we can point you in the right direction. There’s quite a few folks from CA and they might help you find good suppliers.
Good job though. I have one who won’t drink electrolytes either so on a whim I mixed two packets of propel in a 16ox water bottle and drenched him with it and he couldn’t drink it fast enough. You can also try yellow Gatorade, a lot of folks here do that too in a pinch. Getting her to drink I’d really important. So anything works at this point.
Keep up the great work!